Wanganui list 154 Rangitawa Stream Bush Wanganui Plant List No 157

Vascular of Porewa Stream Bush, SH1 between Marton and Rata, Manawatu Plains Ecological Region

Map reference: NZMS260 S23/ 210287; 160-190 m a.s.l.

C Ogle, J Howard, and 9 others of Wanganui Botanical Group (3 May 2003)

The list covers secondary forest both sides of the road (what was SH1 until about 1990) at the base of 'Polgreen Hill', straddling the Porewa Stream (grid reference is for the road bridge). The forest is on gravel river terraces, fenced but odd sheep present; palatable shrubs seen mainly on terrace scarps and cliffs, especially west of the bridge. Forest canopy dominated by totara, titoki and tawa, in different sites. "The only regionally uncommon seen was bamboo ricegrass (Microlaena polynoda); both Libertia ixioides and L. grandifolia have rather patchy or local distributions in the region (the plants seen in Porewa Stream Bush could not be identified positively as they had been grazed by sheep); Carex lambertiana has a patchy distribution regionally too. Urgent control is needed of old man's beard (seen locally in the 'house block' and the plants we saw were pulled; they were mostly near a large, already cut plant); elderberry, some as large , is a serious threat medium-term; and the abundant Jerusalem cherry, especially in the 'house block', should be controlled. Other weeds that might be controlled to benefit the forest are barberry and blackberry. Species listed as 'planted' were on the road edge by the bridge, where previous vehicle access has been fenced off. * denotes adventive species. Plant abundances: a = abundant; c = common; o = occasional; u = uncommon; l = local (found in few places, but can be common or abundant in those places, hence la = locally abundant, etc.); j = only juvenile plants seen; 'j' with abundance indicates where juvenile plants were much more common than adult (see, e.g., matai).

Formal name Common name(s) Abundance Gymnosperm Trees dacrydioides kahikatea o rimu u(1.) totara s.s. totara c matai o (j/c)

Dicot Trees and Shrubs *Acer pseudoplatanus sycamore u(1.j) Alectryon excelsus titoki a tawa c * Berberis glaucocarpa barberry o s.s. rangiora lc Coprosma areolata o Coprosma grandifolia kanono, raurekau u Coprosma lucida shining karamu l Coprosma rhamnoides a Coprosma rigida o Coprosma robusta karamu u Corynocarpus laevigatus karaka planted * Crataegus monogyna hawthorn o * Cytisus scoparius European broom u dentatus hinau o 1 of 4 Wanganui Plant list 154 Rangitawa Stream Bush Formal name Common name(s) Abundance Geniostoma rupestre ssp. ligustrifolium hangehange o Hebe stricta koromiko u (+ planted) Hedycarya arborea pigeonwood u Hoheria populnea var. (H. sexstylosa) lacebark, houhere u(j/o) * Hypericum androsaemum tutsan u Knightia excelsa rewarewa o(j/lc) Kunzea ericoides var. kanuka lc Leucopogon fasciculata mingimingi l Lophomyrtus obcordata rohutu uj Lophomyrtus bullata X L. obcordata 1.(j/o) Macropiper excelsum kawakawa c Melicope simplex poataniwha c Melicytus micranthus small-leaved mahoe o Melicytus ramiflorus ssp. ramiflorus mahoe c Myoporum insulare Tasmanian ngaio planted Myrsine australis mapou c Myrsine salicina toro 1. Nestegis cunninghamii black maire u Nestegis lanceolata white maire u kaikomako o Pittosporum eugenioides tarata, lemonwood u Pittosporum tenuifolium ssp. tenuifolium kohuhu o * Prunus sp. plum? 2 Pseudopanax arboreus five-finger 1. Pseudopanax crassifolius lancewood, horoeka u(j/o) * Salix fragilis crack willow l * Sambucus nigra elderberry o pate u *Solanum pseudocapsicum Jerusalem cherry la Sophora godleyi kowhai u Streblus heterophyllus small-leaved milktree o * Ulex europaeus gorse lc Urtica ferox ongaonga, shrub nettle l

Monocot Trees and Shrubs cabbage , ti kouka u

Dicot Lianes Calystegia tuguriorum u Clematis foetida 1 Clematis forsteri 1 * Clematis vitalba old man's beard lc colensoi white-flowered rata, aka u Metrosideros diffusa white-flowered rata, aka u Muehlenbeckia australis pohuehue o Parsonsia heterophylla NZ jasmine o(j/c) Passiflora tetrandra native passionflower, kohia c *Rubus fruticosus agg. blackberry lc Rubus cissoides lawyer 1. Rubus schmidelioides var. schmidelioides lawyer 2 2 of 4 Wanganui Plant list 154 Rangitawa Stream Bush Formal name Common name(s) Abundance

Ferns and allies * Adiantum radianum maidenhair fern u Adiantum cunninghamii maidenhair fern u bulbiferum s.s. Hen and chickens fern u. Asplenium colensoi (or hybrid?) 1. Asplenium flabellifolium agg. necklace fern l Asplenium flaccidum hanging spleenwort u Asplenium gracillimum c Asplenium hookerianum s.s. a Asplenium oblongifolium shining spleenwort o Asplenium polyodon sickle spleenwort u Asplenium flaccidum X A. gracillimum 1. Blechnum chambersii u Blechnum filiforme Climbing blechnum l Blechnum novae-zelandiae kiokio u Cyathea dealbata ponga, silver fern o Cyathea medullaris mamaku l Dicksonia fibrosa wheki-ponga 1. Dicksonia squarrosa wheki u Hymenophyllum demissum filmy fern u Hypolepis ambigua u Lastreopsis glabella u Microsorum pustulatum hound's tongue, kowaowao o Microsorum scandens u Pellaea rotundifolia button fern, tarawera c Polystichum richardii hard shield fern o Pteridium esculentum bracken lc Pteris tremula shaking brake, turawera l Pyrrosia eleagnifolia leather- fern o *Selaginella kraussiana African clubmoss l

Orchids Earina mucronata perching orchid u Grasses * Dactylis glomerata crested dogtail o * Ehrharta erecta veld grass la Microlaena polynoda bamboo rice-grass u Poa anceps l

Sedges Carex dissita u Carex lambertiana u Uncinia banksii hook grass l Uncinia scabra hook grass u Uncinia uncinata hook grass u

Rushes * Juncus tenuis u Luzula picta s.s. woodrush u 3 of 4 Wanganui Plant list 154 Rangitawa Stream Bush Formal name Common name(s) Abundance

Monocot Herbs (other than Orchids, Grasses, Sedges, Rushes) Astelia fragrans u Collospermum hastatum perching lily u Lemna sp. (L. minor of NZ authors) duckweed la Libertia sp. (L. ixioides/L. grandifolia) native iris u1 Phormium cookianum mountain flax, wharariki planted

Composite Herbs * Arctium minus burdock o * Cirsium vulgare Scotch thistle o Euchiton gymnocephalus NZ cudweed 1 * Mycelis muralis wall lettuce o * Senecio bipinnatisectus fireweed u * Senecio jacobaea ragwort u

Dicot Herbs (Other than Composites) Acaena anserinifolia bidibid; piripiri u * Conium maculatum hemlock l * Digitalis purpurea foxglove o Haloragis erecta 1. Hydrocotyle elongata l Hydrocotyle heteromeria wax weed u * Lotus pedunculatus lotus major u * Phytolacca octandra inkweed o * Polygonum hydropiper water pepper u * Prunella vulgaris selfheal u * Ranunculus repens creeping buttercup o * Solanum chenopodioides velvety nightshade o * Solanum nigrum black nightshade lc * Stachys sylvatica hedge woundwort u

TOTAL number of indigenous species = TOTAL number of exotic species =

1 patch of about 6 plants, several with large capsules of L. ixioides 4 of 4